Title:
THERMAL RESPONSE BIMETAL ACTUATOR FOR SNAP ACTION
Document Type and Number:
Japanese Patent JPS5958730
Kind Code:
A
Abstract:
A snap-acting thermally-responsive actuator for an electric switch comprises a pear-shaped dished bimetallic blade having a U-shaped cut-out defining a tongue extending from its root or attached end at the larger end of the pear-shaped blade axially of the blade towards the smaller end of the blade, the tongue extending between outer leg portions of the blade which each have a width which decreases in a direction from the larger towards the smaller end of the blade. When the blade is mounted in a switch with the tip end of its tongue secured to a terminal part of the switch and with a moving switch contact carried on the smaller end of the blade for co-operation with a fixed switch contact secured to another terminal part of the switch, the blade thereby being susceptible to heating by electric current flow through the switch when the switch contacts are closed, the pear-shaped blade configuration coupled with the thinning of the outer legs towards the smaller end of the blade provides improved mechanical switching characteristics and improved self-heating characteristics in the blade leading to improved consistency of operation.
More Like This:
| JPS58186543 | [Title of the device] Switch mechanism |
| JPS60200426 | 2-STAGE OPERATION THERMOSWITCH |
Inventors:
AASAA MARUKAMU BURATSUKUBAAN
Application Number:
JP13932983A
Publication Date:
April 04, 1984
Filing Date:
July 28, 1983
Export Citation:
Assignee:
OTSUTA KONTOROOZU LTD
International Classes:
H01H37/54; H01H37/52; (IPC1-7): H01H37/52
Domestic Patent References:
| JPS51109482A | 1976-09-28 |
Attorney, Agent or Firm:
Kuro Fukami